Embodiments provide a write operation circuit, a semiconductor memory, and a write operation method. The write operation circuit includes: a data determination module, a data buffer, a data receiving module, and a precharge module. The data determination module determines, according to a number of low-level bits in input data of a semiconductor memory, whether to invert the input data to generate inversion flag data and first intermediate data. The data buffer determines, according to second intermediate data, whether to invert a global bus, where the second intermediate data is inverted data of the first intermediate data. The data receiving module decodes global bus data according to the inversion flag data and writes the decoded data into the memory bank, where the decoding includes determining whether to invert the global bus data. The precharge module sets an initial state of the global bus to high.

An aspect of managing data block compression in a storage system includes performing, for each block written to the storage system: bit-wise traversing the block, searching the block for a pattern indicating a repeating sequence of bits and, upon determining the pattern exists in the block and the repeating sequence of bits in the pattern exceeds a threshold value, removing the repeating sequence of bits from the block thereby yielding a reduced-size block.

Devices, systems, and methods are provided for dynamically reconfiguring storage devices with applications in real-time to meet user needs, such as running different applications. The devices, systems, and methods relate to a storage device that includes memory for data storage and a controller for storing data in the memory. The controller includes a processor configured to receive an indication to reconfigure the controller with an application that is user-selected; receive the application; reconfigure the controller with the application such that the controller is enabled to run the application; receive an indication to run the application with a set of data as input; receive the set of data; run the application with the set of data as input; and generate resulting data from running the application with the set of data as input.

Techniques for handling journal space in a storage cluster with multiple delta log instances. The techniques include writing delta updates for a respective metadata type to an “active” set of data containers in a delta log instance and raw delta updates to a raw delta log, switching a designation of the “active” set of data containers from “active” to “de-staging” once one or more of the “active” set of data containers has been filled, writing a bookmark for the respective metadata type to the raw delta log and a bookmark list, determining that a de-staging operation has been completed for writing the delta updates from the “de-staging” set of data containers to a storage array, determining that the bookmark for the respective metadata type is the oldest bookmark in the list, and reclaiming space between a tail of the raw delta log and the bookmark written to the raw delta log.

An aspect of managing data block compression in a storage system includes performing, for each block written to the storage system: bit-wise traversing the block, searching the block for a pattern indicating a repeating sequence of bits and, upon determining the pattern exists in the block and the repeating sequence of bits in the pattern exceeds a threshold value, removing the repeating sequence of bits from the block thereby yielding a reduced-size block.

A memory system includes a memory device including a plurality of memory blocks, each memory block including memory cells capable of storing multi-bit data, and a controller configured to allocate the plurality of memory blocks for plural zoned namespaces input from an external device and access a memory block allocated for one of the plural zoned namespaces which is input along with a data input/output request. In response to a first request input from the external device, the controller adjusts a number of bits of data stored in a memory cell included in a memory block, which is allocated for at least one zoned namespace among the plural zoned namespaces, and fixes a storage capacity of the at least one zoned namespace.

Writing new data to a tape volume of a tape emulation unit includes determining if the new data is an update to data that was previously written, writing the new data to a new section of the tape emulation unit in response to the new data not updating data that was previously written, deleting the data that was previously written and writing the new data to a new section in response to the new data updating data that was previously written, the new data being larger than the data that was previously written, and the underlying file system not supporting variable size records/blocks, and overwriting the data that was previously written in response to the new data updating data that was previously written and either the new data not being larger than the data that was previously written or the underlying file system supporting variable size records/blocks.

Examples include updating firmware for a persistent memory module in a computing system during runtime. Examples include copying a new version of persistent memory module firmware into an available area of random-access memory (RAM) in the persistent memory module, and transferring processing of a current version of persistent memory module firmware to the new version of persistent memory module firmware during runtime of the computing system, without a reset of the computing system and without quiesce of access to persistent memory media in the persistent memory module, while continuing to perform critical event handling by the current version of persistent memory module firmware. Examples further include initializing the new version of persistent memory module firmware; and transferring processing of critical event handling from the current version of persistent memory module firmware to the new version of persistent memory module firmware when initializing the new version of persistent memory module firmware is completed.

The present disclosure includes apparatuses, methods, and systems for using a local ledger block chain for secure updates. An embodiment includes a memory, and circuitry configured to receive a global block to be added to a local ledger block chain for validating an update for data stored in the memory, where the global block to be added to the local ledger block chain includes a cryptographic hash of a current local block in the local ledger block chain, a cryptographic hash of the data stored in the memory to be updated, where the current local block in the local ledger block chain has a digital signature associated therewith that indicates the global block is from an authorized entity.

Systems and methods are disclosed for data storage performance scaling based on external energy. In certain embodiments, a system may comprise a data storage device having an interface to communicate with an external device, a nonvolatile memory, and a circuit. The circuit may be configured to receive an indication via the interface of power resources available to the data storage device from the external device in case of a power loss event, adjust a performance metric of the data storage device to apply when accessing the nonvolatile memory during normal power availability based on the indication, and perform operations during normal power availability based on the performance metric.